<div class="doc-item" id="doc-614"><h2 class="doc-item-name">atom<span class="namespace">(clojure.core)</span></h2><ul class="var-arglists"><li>(<span class="var-name">atom</span>  x)</li><li>(<span class="var-name">atom</span> x &amp; options)</li></ul><div class="var-docstring"><p>Creates and returns an Atom with an initial value of x and zero or
  more options (in any order):</p><p>:meta metadata-map</p><p>:validator validate-fn</p><p>If metadata-map is supplied, it will be come the metadata on the
  atom. validate-fn must be nil or a side-effect-free fn of one
  argument, which will be passed the intended new state on any state
  change. If the new state is unacceptable, the validate-fn should
  return false or throw an exception.</p></div><div class="var-source"><pre>; clojure/core.clj:1287
(defn atom
  ([x] (new clojure.lang.Atom x))
  ([x &amp; options] (setup-reference (atom x) options)))</pre></div><div class="license"><p>Copyright (c) Rich Hickey. All rights reserved.</p><p>The use and distribution terms for this software are covered by the <a href="http://opensource.org/licenses/eclipse-1.0.php">Eclipse Public License 1.0</a>, which can be found in the file
          epl-v10.html at the root of this distribution. By using this software
          in any fashion, you are agreeing to be bound by the terms of this
          license. You must not remove this notice, or any other, from this
          software.</p></div></div>